255.3 The Chromatic TunerOpen the US-428’s control panel andselect the “Tuner” tab.In the “Input” section, select the US-428input channel that you want to tune (A,B, C, or D).Play a note and adjust the trim knob forthat input until the signal is strong, butnot clipping.The “Level” meter on the screen shoulddisplay bright green segments withoutlighting the top red segment.If desired, you can change the TuningStandard in the “Reference” section.Normally, the Tuning Standard is set to440 cycles per second for a middle “A”note, but you can use the up/downarrows to change it to a numberbetween 430 and 450 cycles persecond.As you play, the detected note will bedisplayed below the Tuning lights (A# orE, for example). If the note is sharp, the“Sharp” arrow and a Tuning light to theright of ‘0’ are bright red; if the note isflat, the “Flat” arrow and a Tuning lightto the left of ‘0’ are bright red.The numbers below the tuning lightsindicate how far out of tune the note is,in cents (100 cents is one semitone).When the note is in tune, the center ‘0’light and both the Flat and Sharp arrowsare bright green.Note: The chromatic tuner consumessome CPU bandwidth in your system.Therefore, when you finish using thetuner, we recommend that you eitherselect another control panel tab or closethe control panel.Illustration 5.03 – The Chromatic Tuner Page